Bacteriosis is a frequent cause of decay of the ovaries. Its spread on cucumber ridge contributes to the high humidity of soil and air, as well as saudinet planting. The appearance of bacterial blight may be due to violation of the conditions of detention cucumber landings: poor soil, sudden temperature changes, etc.
Gardeners will often ignore the rule of farming, warning that it is impossible to grow cucumbers from year to year on the same plot. The infection tends to persist in soil and infect the next planting seasons.
To prevent rot, you can spray cucumber whip with 1% Bordeaux liquid or a 0.4% suspension of copper oxychloride. Typically after this treatment, the cucumbers begin to tie well and develop.
Cucumbers are very sensitive to watering. They should be watered frequently and regularly, especially during fruiting. It is impossible to prevent drying of the soil. However, it is also unacceptable to turn a cucumber ridge in a puddle, and this may lead to waterlogging of the soil, and from it already to mildew and rot. All this will inevitably lead to the fact that the flowers and the ovary will begin to turn yellow, rot and fall off.
Watering cucumbers need only warm water in cool weather – in the daytime, in a Sunny early morning. On hot days it is advisable to do a refreshing watering (not necessarily to the soil, you can just sprinkle the leaves), evening watering, as usual. If the ovaries have started to turn yellow (this happens most often in cold, wet weather), carefully remove the flowers and treat these places with a weak solution of potassium permanganate (potassium permanganate).
A large number of ovaries
Do not allow development on one cucumber whip more than 25-30 ovaries. Cucumbers grow quickly, especially in the greenhouse, and the all the number of formed fruits of the plant may not be enough. As a result, some prevent to grow and develop others, and as a result, the farmer has a lot of yellowed and rotting ovaries and the same – small and the curves of cucumbers.
Some varieties of cucumbers, and in particular hybrids can form on one whip at the same time up to 150 ovaries. To harvest please you, time to remove the newly formed shoots, even those which have female flowers.
The lack of trace elements in the soil
The deficiency of micronutrients in the soil can also cause yellowing and abscission of flowers and ovaries. Gardeners lose at the same time to 50% harvest of cucumbers. Especially the notable lack of trace elements where often made of mineral fertilizers (nitrogen, potassium, phosphorus). The situation can be improved the introduction of micronutrients, containing manganese, copper, boron, molybdenum, zinc and others.
With a large lack of trace elements acceptable use of highly concentrated drugs produced by manufacturers in the form of microgranules – Brexil calcium (Brexil Ca), Rexolin plus (Plus Rexolin). You can also make fertilizer, "Crystal", "TerraFlex and "Master" containing NPK – nitrogen-phosphorus-potassium fertilizing with a complex of microelements. To replenish the deficiency of trace elements will help applied to soils wood ash at a ratio of 300 g/sq. m.
Advice 2 : What if yellow ovaries of cucumber
Amateur gardeners are often faced with a problem like yellowing of cucumber ovaries. Just color gained strength, and the ovary was yellow and opal. Reasons why cucumbers turn yellow ovary, there is quite a bit.
Inappropriate conditions for growing. Watering cucumbers need to be implemented quite often. This water-loving plant. Lack of moisture affects the yellowing of the ovary and the leaves. Irrigation is carried out better in the early hours or late in the evening every day if the weather is dry enough. Additional forage in the form of wood ash and urea will provide cucumbers with potassium and nitrogen. Useful substances are contained in cow, chicken litter, so basal dressing should be made at the slightest sign of weakness.
If the cucumbers turn yellow ovaries, then most likely, they remain napylenie. Often insects are not able to pollinate the ovary, and it turn yellow and fall off. Yields are given only pollinated plants. It is necessary to ensure the access of insects to the ovaries in a confined space (if it's a greenhouse or a greenhouse), but if this is not possible, to make pollination by hand. The best solution would be the cultivation of self-pollinated varieties and hybrids.
Sudden temperature drops may well be the reason why cucumbers turn yellow ovaries, and the yield decreases. The reason lies in the ability of cucumber roots absorb nutrients only when the temperature is above 10°C. At low temperatures the capacity is reduced to a minimum, and the ovaries begin to lose nutrients and yellowing. Such differences contribute to the development of fungal diseases of cucumber roots and their mass loss. In this case, can only save feeding roots.
What if yellow ovaries of cucumber, though the temperature is quite reasonable, and timely watering. It is possible that the cause of all this hot sun. To transplant cucumbers need on the shaded areas. Bright sun can burn the leaves and ovaries, especially if they are with the irrigation water. Therefore, watering should be only at the root, avoiding contact with the ovary.
Lose parasites such as aphids, spider mites, lead to the defeat of cucumber vines. Ovaries do not have time to bear fruit. If yellow ovaries of cucumber, you should carefully check the plant for the presence of parasites. Upon detection of such problems should be spraying a special tool.
Are able to affect cucumbers and bacteriosis. Too high humidity can lead to shock, therefore, if you notice bacteriosis should spray the plant with Bordeaux solution.
A large number of ovaries can also lead to yellowing. Because a large number of ovaries consumes much more nutrients. Therefore, at one end, their number should not exceed 30. Proper and timely care culture will allow you to obtain a high yield of cucumbers.